Thanks... On Sun, Oct 30, 2011 at 3:42 PM, Matthew Knepley <knepley at gmail.com> wrote:
> On Sun, Oct 30, 2011 at 11:24 AM, behzad baghapour < > behzad.baghapour at gmail.com> wrote: > >> Then it would be an approximation to the Preconditioned Matrix (JM^(-1) >> or M^(-1)J) up to the dimension of the Krylov subspace? > > > Yes. > > Matt > > >> On Sun, Oct 30, 2011 at 2:47 PM, Matthew Knepley <knepley at gmail.com>wrote: >> >>> On Sun, Oct 30, 2011 at 7:49 AM, behzad baghapour < >>> behzad.baghapour at gmail.com> wrote: >>> >>>> Dear all, >>>> >>>> What is the procedure or method to calculate Extreme Singular Values >>>> when calling KSPComputeExtremeSingularValues( )? >>>> >>> >>> Are you asking what is done internally? We call LAPACK SVD on the >>> Hermitian matrix made by the Krylov method. >>> >>> Matt >>> >>> >>>> Thanks, B. B. >>>> >>> >>> -- >>> What most experimenters take for granted before they begin their >>> experiments is infinitely more interesting than any results to which their >>> experiments lead. >>> -- Norbert Wiener >>> >> >> >> >> -- >> ================================== >> Behzad Baghapour >> Ph.D. Candidate, Mechecanical Engineering >> University of Tehran, Tehran, Iran >> https://sites.google.com/site/behzadbaghapour >> Fax: 0098-21-88020741 >> ================================== >> >> > > > -- > What most experimenters take for granted before they begin their > experiments is infinitely more interesting than any results to which their > experiments lead. > -- Norbert Wiener > -- ================================== Behzad Baghapour Ph.D. Candidate, Mechecanical Engineering University of Tehran, Tehran, Iran https://sites.google.com/site/behzadbaghapour Fax: 0098-21-88020741 ================================== -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20111030/0d2c69b8/attachment.htm>
